const std = @import("std");

// Although this function looks imperative, note that its job is to
// declaratively construct a build graph that will be executed by an external
// runner.
pub fn build(b: *std.Build) void {
    // Standard target options allows the person running `zig build` to choose
    // what target to build for. Here we do not override the defaults, which
    // means any target is allowed, and the default is native. Other options
    // for restricting supported target set are available.
    const target = b.standardTargetOptions(.{});

    // Standard optimization options allow the person running `zig build` to select
    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
    // set a preferred release mode, allowing the user to decide how to optimize.
    const optimize = b.standardOptimizeOption(.{});

    const mod = b.addModule("spice", .{
        .root_source_file = b.path("src/root.zig"),
    });

    if (b.option(
        bool,
        "examples",
        "Build examples",
    ) orelse false) {
        const parg = b.lazyDependency("parg", .{}) orelse return;

        const example = b.addExecutable(.{
            .name = "spice-example",
            .root_module = b.createModule(.{
                .root_source_file = b.path("examples/zig-parallel-example/main.zig"),
                .target = target,
                .optimize = optimize,
            }),
        });
        example.root_module.addImport("spice", mod);
        example.root_module.addImport("parg", parg.module("parg"));

        b.installArtifact(example);
    }
}
